That source tells NBC10, that police began questioning the 37-year-old man late Wednesday night about the brutal murder of 35-year-old Melissa Ketunuti. Crime Scene Investigators also spent a considerable amount of time searching the man's Levittown home that he shares with his girlfriend and her children. They left with bags and bags of evidence, according to the source.

CHOP Doctor Found Bound & Burned in Basement

Neighbors of Melissa Ketunuti say she was a doctor at Children's Hospital of Philadelphia. The 35-year-old pediatrician was found dead in her Center City home on Monday. NBC10's Tim Furlong reports with the latest. (Published Tuesday, Jan 22, 2013)

Search Continues for CHOP Doc's Killer

Police are appealing for the public's help after a young doctor is strangled and set on fire. Investigators don't know if 35-year old Melissa Ketunuti knew her attacker or was a random target. (Published Tuesday, Jan 22, 2013)

Ketunuti, a pediatrician at the Children's Hospital of Pennsylvania, was found burning in the basement of her Naudain Street home in South Philadelphia Monday afternoon by her dog-walker.